Information sources in politics and political science : a survey worldwide
editors, Dermot Englefield, Gavin Drewry
Butterworth, 1984
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Prytherch, Ray
Sources of information in librarianship and information science
Gower, 1987
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Wiggins, Gary, 1943-
Chemical information sources
McGraw-Hill, 1991
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Ching-Chih, Chen
Scientific and technical information sources
MIT Press, 1977
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Information sources in patents
edited by C.P. Ager
Bowker-Saur, 1992
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